fix: Increase client_max_body_size to support large file uploads

[kinboyw]

This PR modifies the NGINX configuration template (pkg/router/route.conf) to support larger file uploads by adding:

client_max_body_size 1000m;

Changes:
• Added client_max_body_size 1000m; directive to the NGINX router configuration

• This allows file uploads up to 1000MB (1GB) through kt-connect

Context:
The default NGINX client_max_body_size (typically 1m) was insufficient for file transfer use cases. This change enables:
• Reliable transfer of medium/large files

• Better compatibility with file upload requirements

• Maintains existing security constraints while increasing practical limits

Testing:
• [x] Verified file uploads up to 1000MB work correctly

• [x] Confirmed existing functionality remains unaffected

• [x] Tested with both HTTP and HTTPS connections

Impact:
• Improves file transfer capabilities without requiring client-side changes

• Backward compatible with all existing deployments

Additional Notes:
The 1000m limit can be adjusted in future if needed by modifying this configuration value.

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[qlty-cloud-legacy]

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